MRF19085 Datasheet, PDF (6/12 Pages) Motorola, Inc – RF Power Field Effect Transistors

Freescale Semiconductor, Inc.
TYPICAL CHARACTERISTICS
0
f1
f2
1.2288 MHz BW 1.2288 MHz BW
− 10
− 20
−ACPR @
30 kHz BW
− 30
+ACPR @
30 kHz BW
− 40
− 50
− 60
−IM3 @
1.2288 MHz BW
− 70
−5.00 −3.75 −2.50 −1.25 0.00
+IM3 @
1.2288 MHz BW
1.25 2.50 3.75 5.00
f, FREQUENCY (MHz)
Figure 3. 2-Carrier N-CDMA Spectrum
− 20
V_DD = 26 Vdc
− 30
I_DQ = 850 mA
f1 = 1960 MHz
100 kHz Tone Spacing
− 40
η
3rd Order
− 50
5th Order
− 60
7th Order
− 70
4
10
P_out, OUTPUT POWER (WATTS) PEP
Figure 5. Intermodulation Distortion
Products versus Output Power
50
40
30
20
10
0
100
30
− 28
V_DD = 26 Vdc, I_DQ = 850 mA
25 ^{f1 = 1958.75 MHz, f2 = 1961.25 MHz}
− 35
1.2288 MHz Channel Bandwidth
Peak/Avg. = 9.8 @ 0.01% Probability (CCDF)
20
− 42
IM3
15
− 49
Gps
10
− 56
η
5
− 63
ACPR
0
0.5
1
− 70
10
30
P_out, OUTPUT POWER (WATTS Avg.) N−CDMA
Figure 4. 2-Carrier N - CDMA ACPR, IM3, Power Gain and
Drain Efficiency versus Output Power
− 20
V_DD = 26 Vdc
−25 _{f = 1960 MHz}
100 kHz Tone Spacing
− 30
− 35
I_DQ = 550 mA
− 40
700 mA
− 45
1150 mA
1000 mA
− 50
850 mA
− 55
4
10
100
P_out, OUTPUT POWER (WATTS) PEP
Figure 6. Third Order Intermodulation
Distortion versus Output Power and I_DQ
24
0
η
22
− 10
IRL
20 _{VDD = 26 V}
P_out = 18 W Avg.
18 ^IDQ ^{= 850 mA}
16 ^{2−Carrier N−CDMA, 2.5 MHz Carrier Spacing}
1.2288 MHz Channel Bandwidth
Peak/Avg. = 9.8 @ 0.01% Probability) (CCDF)
14
− 20
− 30
IM3
− 40
ACPR _−50
Gps
12
− 60
1930 1940 1950 1960 1970 1980 1990
f, FREQUENCY (MHz)
Figure 7. 2-Carrier N-CDMA Broadband
Performance
14
12
G _ps
V_DD = 26 V
10 I_DQ = 850 mA
f = 1960 MHz
8
6
η
4
2
P _in
0
2
10
P_out, OUTPUT POWER (WATTS)
Figure 8. CW Performance
54
47
40
33
26
19
12
5
100 140
MRF19085R3 MRF19085LR3 MRF19085SR3 MRF19085LSR3
MOTOROLA RF DEVICE DATA
6
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